User`s manual

WE-2100T Series User’s Manual Getting Started
3-5
Min. Max. Unit Conditions
High-level
input voltage
Minimum voltage when DO is set
to “High” status 2.4 ----- V
The output current for each digital output channel carries only 1 mA.
On the evaluation board, the DIO mode jumper selects whether a digital channel will be connected
to the DIP switch for input testing, or to the LED for output testing. If DIO1 is set to digital input
mode on the WE-2100T, you can use a jumper setting on the evaluation board to connect DIO1 to
the DIP switch. Digit one on the DIP switch will then be the input device for DIO1. When you flip
the switch on or off, you can see the status of DIO1 change on the web console or in the Windows
utility.
1. First, position the jumpers so they correspond with the input/output mode of each digital I/O
channel. In the example below, channels 0 through 3 are output (DO) channels and channels 4
through 8 are input (DI) channels.
2. After setting the jumpers, use the DIP switches to set the status for input channels 0 through 3.
You can set the status to either low (on) or high (off). In the example below, channel 0 is set
to low, and channels 1 through 3 are set to high. Note that channel 0 corresponds to switch 1.
3. Use the web console to set the status of output channels. If you set channel 4’s status to
“Low” and the others to “High,” the DO4 LED will glow and the other LEDs will remain
dark. Please refer to Chapter 9 for more configuration details.
LED Circuit Diagram
3.3V
Dout
The digital output LEDs is a sink circuit, as shown in the circuit diagram.